| 尿素对土壤中碳钢微生物腐蚀的影响 |
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| 引用本文： | 孙成,李喜明*,许进,闫茂成,王福会,王振尧.尿素对土壤中碳钢微生物腐蚀的影响[J].物理化学学报,2012,28(11):2659-2668. |
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| 作者姓名： | 孙成 李喜明* 许进 闫茂成 王福会 王振尧 |
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| 作者单位： | State Key Laboratory for Corrosion and Protection, Institute of Metals Research, Chinese Academy of Sciences, Shenyang 110016, P. R. China |
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| 基金项目： | supported by the National Natural Science Foundation of China(50971128,51161001);National RD Infrastructure and Facility Development Program of China(2005DKA10400-CT-2-02)~~ |
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| 摘 要： | 采用失重、极化曲线和阻抗谱等方法研究了尿素对土壤中微生物腐蚀(MIC)的影响. 研究结果表明, 在接菌土壤中尿素加速碳钢的腐蚀, 而在灭菌土壤中抑制其腐蚀. 接菌土壤中由于硫酸盐还原菌(SRB)的存在,腐蚀产物中检测到FeS2. 电化学阻抗谱(EIS)的结果表明, 在实验后期腐蚀过程由浓差极化控制.
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| 关 键 词： | 硫酸盐还原菌 碳钢 尿素 电化学阻抗谱 失重 |
| 收稿时间： | 2012-06-12 |
| 修稿时间： | 2012-08-24 |
Effect of Urea on Microbiologically Induced Corrosion of Carbon Steel in Soil |
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| SUN Cheng,LI Xi-Ming XU Jin,YAN Mao-Cheng WANG Fu-Hui WANG Zhen-Yao.Effect of Urea on Microbiologically Induced Corrosion of Carbon Steel in Soil[J].Acta Physico-Chimica Sinica,2012,28(11):2659-2668. |
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| Authors: | SUN Cheng LI Xi-Ming XU Jin YAN Mao-Cheng WANG Fu-Hui WANG Zhen-Yao |
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| Institution: | State Key Laboratory for Corrosion and Protection, Institute of Metals Research, Chinese Academy of Sciences, Shenyang 110016, P. R. China |
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| Abstract: | The effect of urea on microbiologically induced corrosion (MIC) of carbon steel in soil was investigated using weight-loss measurement, electrochemical polarization, and electrochemical impedance spectroscopy (EIS). Urea tends to accelerate corrosion of carbon steel in inoculated soils and inhibit corrosion in sterile soils. In inoculated soils, FeS2 was detected in corrosion products because of the presence of sulfate-reducing bacteria (SRB). The EIS results showed that the process was controlled by concentration polarization in the later stages. |
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| Keywords: | Sulphate-reducing bacteria Carbon steel Urea Electrochemical impedance spectroscopy Weight loss |
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